Here is our list of the best reviewed cases for the iPhone 4 and 4S from the site, sorted by rating. Be sure to check out the full reviews to get more details and photos for each case.

1. Otterbox Defender

The Otterbox Defender for iPhone 4 and 4S (review) is a three-part case (hard-plastic interior, silicone rubber exterior, and clear-plastic front screen) that offers the most protection you can provide the iPhone 4(S) and still be able to use all the features of the device. The downsides are that it increases the bulk of the phone and makes accessing some of the iPhone’s ports less convenient. Still, if you’re interested in the Defender, it’s for protection, and the Defender is the most protective case you can buy and still be able to use all the features of the iPhone.

2. Case-Mate Tough

The Case-Mate Tough for iPhone 4 and 4S (review) offers excellent protection with its two-layer approach. A soft silicone layer adds shock absorption while a hard plastic layer adds strength and rigidity. A textured surface improves grip, and the case feels good to hold in the hand. Overall, it’s a well-designed case with no big flaws.

3. Otterbox Commuter

The Otterbox Commuter for iPhone 4 and 4S (review) is a protection-focused case similar in design to the Otterbox Defender, only slightly thinner and without a built-in screen protector. It’s a dual-layer case made of an interior silicone rubber sleeve and an outer hard-plastic casing. It’s only flaws are its bulky size and less convenient access to the iPhone’s headphone and docking ports. Overall, it’s a well-designed case made of quality materials, and some of the best protection you can get for the iPhone 4.

4. Case-Mate Pop!

The Case-Mate Pop! for iPhone 4 and 4S (review) is a dual-layer case that combines hard plastic with silicone rubber to offer the best of both worlds. It offers good protection in a lightweight, slim profile. The only flaws are minor in the form of a hard-to-access ringer switch and a glossy surface that takes on tiny scratches, which weren’t too noticeable in our testing. Overall, the Pop! is an excellent case we can highly recommend. It’s compatible with the CDMA (Verizon) and GSM (AT&T) iPhone 4.

5. ZeroChroma Teatro

The ZeroChroma Teatro (review) is more about its functionality than it is about protection. It’s greatest feature is a built-in stand that can rotate and hold the iPhone in both portrait and landscape positions. The stand rotates 360 degrees and can click into several different angles at any point of that rotation. The stand is versatile enough to be used on any surface. It’s the best case/stand combo out there, and I’ve reviewed a few. The Teatro’s thin plastic prevents it from offering much shock absorption though, and that’s rub with this case. Still, it’s the case I use on an everyday basis, as adding the functionality of an always-have-it-on-you stand with the already incredibly useful iPhone makes for a perfect combo.

6. Ballistic SG

The Ballistic SG for iPhone 4 and 4S (review) is a protection-focused case that combines two layers of hard plastic and silicone rubber along with extra thick corners for excellent shock absorption. An overall well-designed case, the only flaws are additional bulk and a hard-to-access ringer switch.

7. Otterbox Impact

The Otterbox Impact for iPhone 4 and 4S (review) is one of the thickest silicone cases we’ve reviewed and one of the most protective. Offering good accessibility, improved grip, and excellent build quality, the Impact is one of the best choices for anyone looking for an affordable protective silicone case.

8. G-Form X-Protect for iPhone 4/4S

When it comes to shock absorption, the G-Form X-Protect (review) is one of the best iPhone cases available. The case is made from a special new foam called Poron XRD that is soft to the touch but stiffens upon impact. The foam can absorb up to 95% of the energy from an impact. Remember that game where you had to build a container to protect an egg for dropping it from the top of a ladder? This is the stuff you want wrapped around that egg. The case is generally well-designed. Most importantly, it doesn’t get in the way of using the iPhone on a daily basis. The X-Protect is a bulky case, but that’s the price you pay for peace of mind. Check out our full review for more details.

9. Speck Fitted

The Speck Fitted case for iPhone 4 and 4S (review) is a stylish case that also offers solid protection. The exterior of the case is mostly hard plastic except for a cloth backing that is available in a variety of patterns and styles. Overall, the case is sturdy enough to offer superb protection for your iPhone, and the cloth backing makes it feel nice in the hand. The case’s downsides are that it increases the iPhone 4′s size and weight, while also decreasing accessibility to some of the iPhone’s buttons. It’s compatible with Verizon and AT&T iPhones.

10. Case-Mate Egg

The Case-Mate Egg (review) case for iPhone 4 & 4S has an unusual textured surface on its back that feels like a stress toy and is quite comfortable to hold in the hand. Underneath its unique design is an all-around well-designed case that doesn’t get in the way of using the iPhone on a daily basis. The silicone rubber case fits tight around the iPhone and supplies enough shock absorption to protect your iPhone from normal, everyday drops. I found almost nothing to complain about with the Case-Mate Egg, and it’s even incredibly affordable at only $15. Available in several different colors.

11. Case-Mate Vroom

The Case-Mate Vroom for iPhone 4 and 4S (review) is an affordable silicone rubber case with a distinctive tire-tread pattern on its back. It offers good shock absorption and improved grip. A thick rim that sticks up above the iPhone’s front screen adds some protection should the iPhone drop on that side. Overall, a convenient, good-looking case at a low price. Compatible with Verizon and AT&T iPhones.

12. SwitchEasy Colors

The SwitchEasy Colors for iPhone 4/4S (review) is a silicone case available in 9 different colors. The Colors case gets all the details right and is one of the best fitting cases we’ve come across. Overall, a superior form and fit combined with a slim profile and decent protection make this a solid case, as it was with the iPhone 3G version.

13. iChair

The iChair (review) case comes with an integrated stand capable of holding the iPhone up in portrait and landscape orientations. It offers excellent protection that is rare for slim hard-plastic cases. An all-around well-designed case, the only minor flaws are a hard to press sleep button and limited angles for the stand (one each for portait and landscape). Compatible with Verizon and AT&T iPhones.

14. Scosche Kickback

The Scosche Kickback (review) is a dual-layer case with a built-in, flip-out stand capable of holding the iPhone up in landscape orientation. The Kickback is an overall well-designed case offering above average protection and good accessibility to all the iPhone’s features. Our only complaints are that the stand only offers one viewing angle, and that the silicone rubber layer is thinner than most other dual-layer cases. Compatible with both the Verizon (CDMA) and AT&T (GSM) iPhone 4.

15. Griffin Reveal Etch

The Griffin Reveal Etch (review) is a solid all-around case, offering good looks, good protection, and good build quality. While not on par with silicone or dual-layer cases in terms of shock absorption, the Etch does maintain a svelte profile that adds little weight or bulk to the iPhone 4.

16. Incipio Silicrylic

The Incipio Silicrylic (review) for iPhone 4 offers two-layers of protection, a soft silicone interior with a hard plastic exterior. Its main flaw is poor interaction with the iPhone 4′s LED flash, causing some pictures to look washed out. It also adds a bit of bulk to the iPhone. Overall, a decent case that looks good.

17. Cellet Jelly

The Cellet Jelly case (review) is the most affordable iPhone 4 case we’ve reviewed yet, and although not spectacular in any one area, it’s a solid all-around case that won’t interfere with using the iPhone. Our lone complaint is a semi-loose fit that can cause corners of the case to slip off while taking it in and out of pockets.

18. Splash Cruiser Slim-Fit

The Splash Cruiser Slim-Fit (review) is a slim, hard-plastic case with a removable bottom that makes it perfect for those who use iPhone docks or oddly shaped USB cords. The surface of the case has a special soft texture that, combined with the cases smooth curves, make it a pleasure to hold. The case’s only flaws are that it doesn’t leave enough room around the iPhone’s sleep buttons, making them difficult (and even painful) for big fingers to press. A solid case with a few minor flaws. Compatible with Verizon and AT&T iPhones.

19. iLuv Fusion

The iLuv Fusion (review) is a combination case and stand that we liked very much as a versatile stand but not so much as an everyday case. The stand and its accompanying hinge make the iPhone wobble when placed on a flat surface and awkward to hold in the hand. The stand is removable, but even as a case, there are design flaws like hard-to-press buttons. Overall, the case is not a total disaster, and we got used to its flaws over time. We also liked the functionality of the stand, but recommend it most for travelers or those who need to frequently prop up the iPhone on a desk. Compatible with Verizon and AT&T iPhones.

20. Amzer Jelly

The Amzer Jelly (review) are inexpensive silicone cases available in 10 different colors. Offering good protection and average looks, the case’s main flaw is interference with the iPhone’s LED flash, causing slightly discolored pictures when the flash is put to use.